According to commenters on reddit the picture is from the actual NASA page.

Look, I have a few questions. For NASA. I have questions for NASA scientists.

1) Are you all 14? Is this something people got to do if they went to astronaut camp? Usually I tell people my parents wouldn’t let me go to astronaut camp, but really, I was just very frightened by the idea of being upside down for a long period, and did not want to go. Suffice to say, if I’d known you got to draw stuff on planets, I would have been braver.

2) Was this deliberate? I guess if it was deliberate 20 points (the average human being can only earn 100 points in their lifetime, after which they are automatically promoted to “michevious immortal sprite”). If you just accidentally drew a penis on a planet and then decided to leave it, 50 points.

2) Is there even wind on Mars? Or elements? Maybe that penis is just going to be there forever and ever? I wish someone had signed their name next to this so we knew who to congratulate.